morgan



I H. MORGAN. EXCAVATING ATTACHMENT FOR MINING MACHINES.

APPLICATION FILED .AUG.6. IBIO,

I Patented Aug. 29, 1916.

6 .SHEETS-SHEET l.

t III NI l" I. H. MORGAN. EXCAVAI'ING ATTACHMENTFOII MINING MACHINES.

APPLICATION FILED AUGJJ. I9l0.

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I. H. MORGAN. EXCAVATING'ATTACIIMENT FOR MINING MACHINES. I APPLICATIONFILED AUG.6. I9I0. Y LMA@ l PatentedAug. 29,1916.

6 SHEETS-SHEET 3.

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LH. MoRGAN.. EXCAVA'TING ATTACHMENT FOR MINING MACHINES, APPLICATIONFILED AUG-6. 1910.

' Patenfemug. 29,1916.

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' IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII WML 1. H. MORGAN.EXCAVATING ATTACHMENT FOR MINING MACHINES.

. APPLICATION FILED AUG-6. [910. 1,196,15., PatentedAug. 29,1916.

6 SHEETS-SHEET 5.

J. H. MORGAN. EXCAVATING ATTACHMENT FOR MINING MACHINES. APPLICATIONFILED AUG.6. |910. I I 96,1 5 Patented Aug. 29, 1916.

6 SHEETS-SHEET 6.

citizen of the Chicago, in the county of Cook and State of villinois,have invented certain new .broken away.

JOHN H. MORGAN, 0F QHICAGO,

ILLINOIS, ASSIGNOR TO AMERICAN MORGAN COMPANY,

EXCAVATING ATTACHMENT FOR MINNG-MACHINES.

4*Specifimation of Letters Patent.

, Patented Aug. 291, 191.6..

Application filed August 6, 1910. Serial No. 575,962.

To all whom t may concern. y vBe it known that l, JOHN l-l. MORGAN,United States, residing at and useful Improvements in ExcavatingAttachments for MiningfMacbines, of which the following is aspecification.

This invention relates to excavating machil-ies, and more especiallycontemplates an attachment for any standard type of mining machine. l

The primary object is to provide a machine having an improvedconstruction, combination and arrangement of parts adapting it to beused cooperatively with a mining machine, and to perform part of thework heretofore imposed upon the latter j 1 machine.

One of the main objects of the present invention is to provide improvedmeans for breaking down the material' which is being mined.

Another object is to provide improved means for cooperatively mountingand operating a plurality of drills and breaking down wedges.

Another object is to provide improved means for elevating the drillingand wedging devices and for varying the angles at which they operate.

Other and further objects will appear in the specification and bespeciiically pointed out in the appended claims, reference being had tothe accompanying drawings exemplifying the invention and in whichfFigure 1 is a 'side elevation of an eXcavating machine constructed inaccordance with the principles of the present invention. Fig. 9. is atop p lan view of the same, parts being broken away. Fig. 3 is a frontelevation of the same. Fig. l is a rear elevation of the same. Fig. 5 isa section on the line V-V Fig. 9.. Fig. G is an enlarged detailelevation of some of the parts shown in Fig. o. Fig. 6 is a fragmentaryView showing the connections between some o 6. Fig. 7 is a fragthedetails Fig. 8 is a parts being Athe parts shown in Fig. mentary viewsho-wing some of of Fig. 5 on an enlarged scale..

side elevationof a modification,

Fig. 9 is a top plan view o side of which project from an the embodimentshown in Fig. 8. Fig. 10 is a rear elevation of a portion of theembodiment shown in Figs. 8 and 9. Referring first to the embodimentshown in Figs. 1 to 7 inclusive, a mining machine which may be of anysuitable construction o r standard type, is represented in dotted lines-at 1 (see Figs. 2, 3 and i) through the endless belt or chain aplurality of horizontal holders 2 for grooving tools 3. Parallellydisposed with reference to the mining machine 1, is an excavatingmachine, the base member or frame 9 of which is i'eleasably locked tothe base frame of the mining machine 1, by means of a pair of lever arms4, which are pivotally mounted at 5 in a pair of lugs 6 which projectfrom one of the side frames of the `base member of said excavatingmachine. The outer ends of the locking arms 4 are crooked at 7 inthemanner shown in Figs. 3 and ll, said arms being thereby adapted toengage the side rail 8 of the adjacent side frame of the base member ofthe mining machine. As shown best in Fig. 1, the base member 9 of theexcavating machine is constructed of small height adapted to be disposedwithin a horizontal groove 10 which is cut into the material to be minedadjacent the floor of the mine by the mining machine 1. Upon the forwardend of the base member 9 is mounted a pair of sprockets11A over whichtravels an endless belt conveyer 13 of any suitable construction, saidconveyer being supported adjacent the rear end of the excavating machineby a pair of sprockets 14, mounted on a shaft 15 journaled in the outerend of an upwardly inclined support or frame 16. As shown in Fig. 2, theshaft 1 5 has keyed thereon outside of one of the sprockets 11i, asprocket wheel 17 to which power is transmitted by a sprocket chain 18deriving its power from a. lower sprocket 19 on a transverse shaft 20.Said transverse shaft Q0 has keyed to its other end a spur gear a secondspur gear 22, on a drive sha-ft 23 of a motor Qi rigidly mounted on therear end of the base member of the excavating machine.

Projecting vertically from the base memf ber 9 of the excavating machineare a pair 21 in mesh with y mounted guides 25 and 26 are voverh'anglingarm end of the shaft tudinal center of the of forward guides or ways 25,and a pair of rearward guides or ways 26, said guides being disposedpreferably adjacent the longibase frame 9 and a purpose Ato be hereinaf-In order to provide means adapting said guides to` coperate with othermeans mounted on a table or support to be presently referred. to, saidguides are provided along one edge with racks 27, said racks extending':throughout the greater portion ofthe length of said guides. The rigidlyconnected above byside rails28 and cross rails 29,-one of said 'siderails 28 being provided with ail spaced apart for ter made clear.

which and a bearing pedestal 31 on the base member 9 isrotatably mounteda vertical shaft 32 provided with a longitudinal slot 33 extendingapproximately the entire length of said shaft. A suitable support forthe breaking down tools is 'provided preferably in the form of a tableor plate 34- which is supported by a plurality of bearing locks 35 and36 reciprocably upon the uprights 26 and 25 respectively. A transverseshaft 37 is journaled in the bearing blocks 35, while a transverse shaft38 is journaled in the bearing blocks 36. On each end of the shaft 37 isa pinion 39. which meshes with one of the racks 27 on the upright 26,while on each 38 is a pinion 40 meshing on the guide 25, said pintoimpart a vertical movewith the rack 27 ion beingadapted ment eitherupwardly or downwardly to said table 34. Forthis purpose a worm gear 41is keyed 4to the end of the shaft 37, and meshes with a worm 42 on theshort shaft 43, which may be rotated by a crank 44 to raise and 'lowerthe rear portion of the table 34. The worm gear 45 carried by the vshaftv 38 is in a similar manner driven by a worm A devices being l table orplate 34 in coaxial alinement with f 46 on the shaft 47 provided with acrank arm` 48 whereby the forward end of the table 34 may be raised andlowered, these operatable independently of eachl' other to provide meanstable 34`may be tilted into different angular positionsyfordfacilitating the work atcertain stages of the operation. As will be seenfrom reference to Figs. 1, 5 and of the drawings, the rear end of thetable or support 34 is provided with a vertical projection orrail 49provided with threaded perforations.

A pair of bearing brackets 50, 51 rigidly mounted upon the each threadedperforation in the projection 49, serves to mount or carry an axiallymovable tool 52, which, in the present embodiment is in theform of adrill. The drill rod 52 is provided with a screw-thread running. fromits rear end forwardly for a con- 65' siderable portion of its-length,and is pro'- 'v rial: On the forward or projection 30, Within,

whereby the a plurality of vided with a feather or spline way 53 for thereception of a key or spline 54, which l'carried by a sprocket 55carried by said rod 52 between the threaded projection 49 and bracket50. It will be evident from the con-l 'struction described that as thedrill rod 52 is rotated in theiri a ner to be hereinafter described, thedrililflpdint 56 of the rod 52 is forced forwardly. ihto the wall of themateend of the drill rod 52 1s provided a rigid collaror flange 57against which abuts a wedge-shaped block 58 which is perforated in themanner indi- .cated to adapt it to be reciprocably mount-l ed on theforward end of the rod 52. Said block 58 is adapted to ltion upon thatportion of the material below the drill 56 after said drill has beenforced into the material, by being provided below with an inclined face59. As shown in Figs. 2 and 5, the wedge block 58 is made of such a sizeat its forward end as will adapt it to lit within the hole made by thedrill 56. Within the table or plate 34 is provideda groove or guide-Way60,(see dotted lines in Figs. 5 and 6) within which the lower face ofthe wedge block 58 slides, and held with its side faces vertical. As thedrill 56 is fed into the material to be mined, the threaded rear endthereof is fed through the threaded perforation in the projection 49 andfed forwardly, the collar or shoulder 57 finally coming into engagementwith the wedge block 58 and forcing it forward in turn to effect awedging action upon the material, as indicated in Figs. 1 and 5.

'In order to provide additional means for driving the wedge block to itswork, a reciprocating block or hammer 6l is slidably mounted' upon therod `52 and interposed be-` tween said hammer 61 and the lateral face ofa bearing block 62 is interposed a resilient member in the form of aspring 63, which tends tdvldrive the Vhammer 6l against the collar 57.Ihehammer 61 is provided with a forwardly projectini* portion 64 whichoverreaches the shouler 57 and is add ted to impinge directly upon thewedge blodli 58 to drive it forward. The lower end Hof the hammer 61 isreciprocably mounted in the slot 60. A. connecting rod 65 pivoted at 66on the hammer 61 is provided at its other end with a slot 67, withinwhich the? crank pin 68 sha'ft 69 oscillates during the operation of thehammer. The crank shaft 69 is jour naled at one end in a bracket '70mounted on the table plate 34, and at its other end within the bearingblock 62. Thebevcl gear 71, which is freely rotatable on the crank shaft69, is provided on its reaiffac'i with a driving pin 72 which is adaptedtd .impinge againstthe crank arm of the crank shaft 69, and force thesame around inta effect a wedging' acfof the short craulf lim menace.the position shown in Figs. 5 and 6. When the parts are in thisposition, a very 'little movement of the crank pin 72 forces the crankpin Y68 into a position in which the,

spring 63 is free to drive the hammer 61` forwardly to strike a blow onthe wedgel one farthest from the mining machine 1,

has a second bevel gear 75 splined thereto, which meshes withanother'bevel gear 76 which is keyed to a short shaft 77 journaled in abox or bearing 78.' Upon the outer end of the shaft 77is keyed a bevelgear 79 which meshes with a bevel gear 80 splined to the vertical shaft32. A pair of bevel gears 81 are free to rotate upon the vertical shaft32, but are held against axial movement thereon in the positions shownin Fig. 1, in which they are spaced apart and oppositely disposed withreference to each other. Splined to the shaft 32 and interposed betweenthe gears 81 is a clutch 82 which is movable along the shaft 32 into andout of clutch engagement with either of the gears 8 1. A bevel gear 83keyed to the end of a drive shaft 84 meshes with both of said gears 81,rotating one of them in one direction and the other inJthe oppositedirection. It will thus be seen that ,the

rotation of the shaft 32 depends upon which of the gears 81 is connectedby the clutch 82 to drive said shaft 32. Upon the outer end of the motorshaft 23 is keyed a bevel gear 85 in mesh with the bevel gear 86 on therear end of the drive shaft 84 by means of which connection power istransmitted to the gears 81. l v

At the beginning of the drilling operation, the screw-threaded shafts 53project rearwardlyfrom the brackets 50 some distance, and the brackets51 are also initially in positions near the rear end of the guideways60. When the shafts 53 are rotated by means of the sprockets 55, theyare screw -threaded through the stationary brackets 49 as shown in Fig.7, and the drills are thus fed forwardly. At the same time the brackets51 will be moved forward slowly, thereby slowly moving forward thevarious hammer devices. These movements may be secured by theconstruction shown in Fig. 6, wherein it will be seen that thevscrew-threaded shaft 53 passes loosely through the bracket ,51, but isthreaded through the nuts' 73 and 73 and also through the bevel gear 73.The nuts 73 and 7 3 and the bevel gear 73 are splined to thescrew-threaded shaft 53, so that they must rotate therewith. By removingthe keys, the nuts and the bevel gear 73 may `be rotated to adjustedposition so as to vary the position of the'bracket 51. 1n this manner,thetime at which the hammer devices go into operation may be varied asdesired so as to secure the desired depths of cut before the wedges acton the material to dislodge the same.

When the drill 56 approaches the limit of its forward movement, thecollar 57 will engage the wedge 58, as shown in lFig. 5. As soon as thisoccurs, the wedge is placed in the path of the hammer 64. The dri1lingoperation may still be continued, but

.mainly for the purpose of enabling the hammer devices to exert repeatedhammer blows on the, wedges so as to effectually break out the materiafrom the mine walls preferably in large locks, as shown in Fig. 5. l

Referring now to Figs. 8, 9 and 10 of the drawings, which show anotherembodiment of the invention, a table plate 34 of similar construction tothe table plate 34 already described, is provided with slots or guideways 60', within which reciprocate the wedge y blocks 58', said wedgeblocks being reciprocably mounted upon the drill rods 52 similarly tothe former embodiment. Said drill rods 52 are driven in exactly the sameman` ner which need not be again described, with the'exception that thevertical shaft 32 is provided with a fiexible universal coupling 87, anda slidingfshaft section 88, which is held against rotation relatively tothe gear 89. Said gear 89 is driven by the drivev shaft 84 through themedium of bevel gear 83. the table plate 34 is pivotally mounted bymeans of bearing brackets 90 and 91 upon its under face, on a transverseshaft 92 provided on one end with a crank arm 93. A pair of screwstandards 94 are rigidly con nected above by a cross bar 95 andsupported below at 96 on the base member 9 Threaded to the screwstandards 94 are a pair of nuts 97 threaded interiorly and provided ontheir outer peripheries with worm gears as shown. Meshing with the nuts97 are a pair of worms 98 which are keyed to the cross shaft 92 so thatwhen the crank arm 93 is revolved, a vertical movement is imparted tothe table plate 34. Thecrossl shaft 92 is journaled in a pair of blocks99, each of which is bifurcated to permit one of thek worm nuts 97 to beinterposedbetween' In this embodiment of the'invention,

ist

spring 102, vwhich exerts a tension between the loop end of thebolt 101and a lug 103, within whichv said bolt is reciprocably mounted,` tendsto hold said bolt within a notch inthe sector 100. For driving the shaft84 any suitable means may be interposed` between the motor and the shaftwhereby the direction ofi-otation may be reversed, or, if desired, areversible motor maybe employed in order to provide means forreti-acting the drill rods 52 after they 2. In a mining machine, thecombinationwith a mining tool, of means for operating the same, a wedgecarried by said mining tool, and automatic mechanism for striking" saidwedge a hammerblow to breakdown material from a mine Wall.

.3'. lIna mining machine, the combination with a frame, of a conveyercapable of havling its forward endv portion extended into ran under-cutin a mine Wall, cutting mechanism, a wedge carried by said cuttingmechamsm, .and automatic mechanism for actuating said wedge on saidcutting mechanism .to breakdown material onto said conveyer.

4. AIn a mining machine, the combination With-a conveyer adapted toextend into an under-cut in a mine Wall, of cutting mechanism above saidconveyer, and wedge 4ap- --paratus slidable on said cutting-mechanism40.

for breaking down material from the mine f wall onto said conveyer.

5. In a mining machine, the combination with a conveyer, of a miningtool mounted -teigalfromthemine wall onto said conabove saidconvefyiier, means for operating saidmining tool, a wedgev slidablymounted ."onfsa-id mining too and power ,mechanism for operating saidwedge to. break downmavWeyer.,

6. In aimining machine, the combination with a mining tool, of means foroperating the same, a wedge slidably mounted on said mining tool,andvmeans for operating said wedgeby moving the same relatively to saidthe floor of a mine, of a plurality of vhooked ,l

mining tool to break down material from th mine wall adjacent saidmining tool.

7. The combination with loading appa- ,ratus having a base membermovable'over levers pivotally mounted on said base 'member, meansmounted on said loading -apparatus to break down the material from amine wall for the handling of said loading apparatus, and means foroperating said loading apparatus while the base member of said loadingapparatus is being dragged over the ioor of the mine dile to the hookedconnections with a moving mining machine.

8. The combination with loading apparatus comprising a base framemovable over the floor of a mine and an endless conveyei adapted toextend into an under-cut in a mine wall, of means for breaking down thematerial above said under-cut and onto said conveyer, anda plurality ofhooks pivoted to said base frame for connection to a mining machinewhich produces the under-cut ahead of the operation of said breakingdown means and loading apparatus.

9. In' an excavating machine, the combination of a base member, aplurality of vertical guides mounted thereon, said guides being providedwith racks, a table reciprocable along said guides and provided withpinions engaging said racks, a mining tool mounted on said table, awedging member movable 'with said table and mounted in of thetable,means foroperating said mining tool, and means independent of the pinionrotating means for operating the wedg- `ing member regardless of theposition and inclination of the table.

10. In an excavating machine, the combination of a base member, avertically movable support, a vertical guide for the forward end of saidsupport, a Vertical guide for the rear end of said support, said guidesand support being provided with means interengaging therebetween forimparting a vertical movement to different portions of said support, amining tool carried by said support, means for operating said miningtool, a wedging member carried by said support in proximity to saidmining tool, and means for operating said wedging member independentlyof the position and inclination of said support.

11. In an excavating machine, the combination Iwith an axially movabledrilling tool, of aA wedge mounted on and i'eciprocable 'along said toolwith the-tool.

12, Im an excavating machine, the combination with'a support, of atoolthreaded in said support, meansfor rotating said tool, and a wedgemoved by said tool into the cavity made by said tool, said 'wedge beingadapted to break down the material to be mined. u

13. In an excavating machine, the combination with a drill, of a drillrod, a wedge device supported by .and reciprocable along saidrod, a stopon said rod to operate said wedge, and means for coperatively drivingsaid drill and wedge device intothe material to be mined.

lll/In an excavating machine, the combination with a support, of meansfor raising llas inmensa and lowering the ends of said support inldependently to tilt said support, a wedge way and in slidable engagementwith said v drill, and a stop. on said drill to operate upon said wedge.

17. ln an excavating machine, the combination of a support provided witha guidelway, adrilljournaled on said support, and a wedge reciproc'ablymounted in said guidevvvay drill, said' `drill being provided with meansfor driving thel wedge into the hole made by said drill. j

18. In an excavating machine, the combination with'a drill forexcavating a cavity in the material to be mined, a wedgereciproca-blymounted on said drill, and a driving A.device reciprocably mounted o'nsaid drill and adapted to impingesaid'wedgeto drive it into the cavitymade by said drill.

19.111' an excavating machine, the combination with a drill, of a wedgereciprocably mounted on said drill with the smaller end of the wedgeforward, a -hammer slidably mounted on the drill and adapted to imit@pinge said wedge, resilient means for driving the hammer forward againstsaid wedge, and means for retracting said hammer against the action ofsaid spring, the' last said means being adapted to release the :t5hammer after it has 4been retracted against the action of said resilientmeans. li

"20. lln an excavating machine, the. combination of a support, cuttingmeans carried by said support, breaking down means folt" 'lowing saidcutting means and entering the 'cut produced thereby, and automaticmechanism for imparting repeated blows to said breaking down means whilesaid cutting means continues in operation.

[ 21. The combination with cutting mech-Y anism, of means for operatingsaid cutting lmechanism to produce,v an incision in a mine 'wall, awedge to enter said incision, and t automatic means for striking one endof said wedge to e'ect dislodgment of material from' the mine walladjacent said cutting.

y nnechanism.v

22. lln an excavating machine, the combination of a support, cuttingmeans carried by said support, breakirg down means car nation of asupport, a drill carried by said' and in slidable engagement with saidried by and followi g said cutting means by entering the incisi producedby the latter, a hammer for imparting a blow to the breaking down meansafter the cutting means reaches a predetermined depth of cut and whilesaid cutting means is still in operation, and means for operating saidhammer.

'23. lln an excavating machine, the combination of a support, cuttingmeans carried by the support, breaking-down means carried by andfollowing the 'said cutting means into the material, spring controlledmeans for imparting a blow to the breaking-down means, and means forretracting the said 8o spring controlled, means.

24. lin an excavating machine, the combination with cutting mechanism,of a recip rocable wedge device supported by said cutting mechanism, astop on said cutting mechanism to operate said wedge, and means forcoperatively driving said cutting mechanism and Wedging device into thematerial to be mined.

25. 'llhe combination with a mining tool, 90

of means for operating the same, a wedge entering the cut producedthereby and while still in operation, and means forautomaticallystriking said wedge a series of hammer blows in successionto dislodge the material adjacent to said cut.

26. The combination with rotary cutting mechanism, of a wedge forbreaking down material adjacent the cut produced by said cuttingmechanism, and automatic meafis for moving said wedge into said cutafter the cutter has made'a predetermined number of revolutions.

27. The combination with a mining tool, of a shaft connected to saidmining tool, a Wedge mounted on said shaft, means for guiding said wedgeto hold itfrom turningt while permitting movement thereof along saidshaft, and means carried by said shaft for pushing the wedge into theopening produced by said mining tool.

28.4 rlhe combination` with a mining' tool, of a wedge, means forpreventing the rotation of said Wedge and restricting it to a straightline movement, and means movable with the forward movement of saidmining tool for` operating said wedge by striking one end thereof,tomove the 'same longitudinally. i

29. The combination with a miningtool, ,120 of a shaft connectedthereto, a wedge, means for restricting the movement of said wedge to apredetermined path of travel, and a means for operating ofscrew-threaded shafts, one connected-to each of said cutters, aplurality ofV rods connecting saidA cutters and said screw-threadedshafts, one for each of said cutters,'a plmrality lof wedges,

4thereof to straight line movements and ref vent theirrotation on saidrods, a plurallit'y of stops, one on each of said rods, for, en'- gagingsaid ward as the plurality ofdevices, one-connected to each of andmovable along said. guideways for opcutters are fed forwardvand aerationon the wedges when the latter ane en-l 5 gaged by said stops.

32. The combination with a mining tool, of means for operatingthe same,a wedge, a."

hammer, a spring associated with said tool,

to enter the incision placing means for freeing the spring to permit itto operate y breakdown material from a mine wall.

33. The combination with a mining tool,

made thereby, means for "of means for operating said mining tool, a

.bre'ftlnvng down device cooperatively related tosaidmining tool, andautomatic mecha' ynismfor 'striking' said breaking down devicesuccessiveblows to break down material from a m'ine wall where operatedby said mining tool. ,A

e 34. In a mining machine, the combination with a base frame comprisinga plurality of vertical gear rods, of a motor mounted on said baseframe, a supplemental frame, a. mining tool mounted onA said supplemen`tal frame, means comprising gearing on said supplemental frame acting onsaid gear rods Afor adjusting the height and inclination of "v'saidsupplemental frame together with the tool mounted thereon, and powertransmission 'gea-ring between the said motor on the base frame/and saidmining tool on the adjustable supplemental frame.

35. The combination with a main frame, of a motor mounted thereon, atable-like supplemental "frame movable to various in clined positions,cutting and breaking down mechanism mounted on said supplemental frame,transmission gearing mounted partly on the main frame and partly on thesupplemental frame for operating said cutting and breaking downmechanism, and a sliding power transmitting shaft-between thegearing onthe main frame and the gearing and means for simulta f and means forsaid conveyer. wedges to move the same forv of a table-like supplementalframe, automatically operated hammer saidv shafts said spring undercompression, and `'tween said hammer against said wedge tov with amining tool mounted on -said 'supplemental' `frame, a motor mounted onsaid main frame,

,Q'power transmission gearing connected' between said motor andy saidlminingfltool',

,.-means for adjustinglthe inclination of' said one mounted on .each ofsaid-mods, a plurality of guidewa'ys, one fol'- ea'ehlof said wedges tolimit the movement.;

supplemental frame together with the'said miningl toolthereon eitherupwardly o r downwardlya conveyer on said main frame,v

the mine wall near said mining tool onto 37. The combination with a mainframe,

and-breaking down mechanism mounted on said supplemental frame, meansfor. lifting and lowering said supplemental frame to various horizontalpos1tions,'mechanism for tiltingsaid supplemental frame and the cut tingand breaking down mechanism mountto various mclmed positions elther upor down,`

edthereon a motor onsaid main power transmission gearing be; vsaid motorand saidcutting and breaking down mechanism sliding shaft to maintaindriving connecframe, and

`tions for various heights and inclinations of said supplemental frame.A

38. In a mining machine, the combination conveyer adapted to extend intoan under cut in a mine wall, of cutting mechanism above saidconveyer,and a wedge apbreaking down material from.

cutting.;

comprising a `paratus slidable with reference to Said cutting mechanismforY breaking down material 'from the mine wall onto said conveyer.

39. In a mining machine, the combination witha mining tool, of means foroperating the same, a wedge slidably carried by said mining tool, andmeans for operating said Wedge by moving the same relatively to saidmining tool to break down material from the mine wall adjacent saidmining tool.` y

40. The combination with a mining tool, of a shaft connected to saidmining tool, a wedge carried by said shaft, means for guiding said wedgeto hold it from turning. while permitting movement-thereof along saidshaft, and means carried by saidshaft for pushing the wedge intotheopening produced by the mining tool. l

41. In van excavating machine, the combination with an axially movabledrilling tool, of a wedge carried by and -reciprocable along said toolwith said tool.

42. In a coal breaking and loading machine, the combination ofa frame, aconveyerionA the'A frame adapted to'enter .a horizontal undercut in thecoal, a cutteron the frame above. the conveyer, means for ad` 130vancing the cutter intol the coal, and means l carried by the cutter andrelatively movable with respect thereto for entering the opening formed.by the cutter and engaging the coal above the conveyer to break itdown.

43. In a coal breaking and loading machine, the combination of a frame,a conveyer on the frame adapted to enter a horizontal undercut in thecoal and to lie at an angle to the face of the coal, a continuouslyacting cutter on the frame above and vertically separated from theconveyer, means for moving the cutter with respect to the conveyer'bodily forward along a path at an angle to the coal face and parallel tothe conveyer yto advance it into the coal, and means for breaking thecoal Adown upon the conveyer.-

44. In a coal breaking and loading machine, the combination of a frame,a conveyer onl the frame adapted to enter a horizontal undercut in thecoal `and to lie at an angle to the face of the coal, a cutter on theframe above the conveyer, means for bodily moving the cutterlongitudinally with respect to the conveyer to advance it into the coal,and means carried by the cutter and relatively movable with respectthereto for entering the opening formed by the cutter and engaging thecoal above the conveyer to break itdown. l

\ 45. In 'a coal breaking and loading machine, the combination of aframe, a couveyer mounted on the frame and adapted to enter a horizontalundercut in the coal, an auger carried bythe frame above the undercut,means for advancing the auger into the coal, and means carriedy by theauger operable'when the auger is projected into the coal to break theunderlying coal down upon the I conveyer.

46. In a coal breaking and loading ma chine, thefcombinatio'n of aframe, a conveyer mounted on the frame and adapted to enter an undercutin the coal, a cutter supported on the frame above the undercut,

means for moving the cutter bodily forward into the coal independentlyofthe conveyer and along right lines transverse of the coal face, meansfor breaking the coal along lines at angles to the coal face andparallel Ito the conveyer downI upon the conveyer,

F. V. WIDGR, EBN. R. JANz.

Copies of this patent inay be'obtained for ve cents each, by addressingthe Commissioner of @atenta v Washington, D. C.

